<template>
 <div>
 <!-- //面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
       <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
       <el-breadcrumb-item>权限管理</el-breadcrumb-item>
       <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- //卡品区域 -->
    <el-card>
       <!-- 添加角色按钮 -->
       <el-row>
          <el-col>
            <el-button type="primary">添加角色</el-button> 
          </el-col>
       </el-row>
       <!-- 用户列表区域 -->
       <el-table :data="roleList" border stripe>
           <!-- 展开列 -->
           <el-table-column type="expand">
              <template slot-scope="scope">
                  <el-row :class="['bdbottom',i1 === 0 ?'bdtop' :'' , 'vcenter']," v-for="(item1,i1) in scope.row.children" :key="item1.id" >
                   <!-- 渲染一级权限 -->
                   <el-col :span="5">
                       <el-tag closable  @close="removeRightById( scope.row,item1.id)">{{item1.authName}}</el-tag>
                       <i class="el-icon-caret-right"></i>
                   </el-col>
                   <!-- 渲染二级权限 -->
                   <el-col :span="19">
                       <el-row :class="[i2===0 ? '' : 'bdtop' ,'vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id"  >
                           <el-col :span="6">
                               <el-tag type="success" closable  @close="removeRightById( scope.row,item2.id)">{{item2.authName}}</el-tag>
                               <i class="el-icon-caret-right"></i>
                           </el-col>
                           <el-col :span="18">
                              <el-tag type="warning" v-for="(item3,i3) in item2.children" :key="item3.id" closable  @close="removeRightById( scope.row,item3.id)">
                                  {{item3.authName}}
                              </el-tag>
                           </el-col>
                       </el-row>
                   </el-col>
                  </el-row>
                  
              </template>
           </el-table-column>
           <!-- //索引列 -->
          <el-table-column type="index"></el-table-column>
          <el-table-column label="角色名称" prop="roleName"></el-table-column>
          <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
          <el-table-column label="操作" width="300px">
              <template slot-scope="scope">
              <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
              <el-button size="mini" type="danger" icon="el-icon-delere">删除</el-button>
              <el-button size="mini" type="warning" icon="el-icon-setting" @click="shouSetRightDiolog(scope.row)">分配权限</el-button> 
          </template>
          </el-table-column>
               
       </el-table> 
    </el-card>
    <!-- 分配权限按钮 -->
        <el-dialog
        title="分配权限"
        :visible.sync="shouSetRightDiologVisible"
        width="50%" @close="setRightDiologClosed" id="setRightDiologVisible">
        <!-- 树形控件 -->
        <el-tree :data="rightlist" :props="treeProps" :default-checked-keys="defKeys" show-checkbox node-key="id" default-expand-all ref="treeRef"></el-tree>
        <span slot="footer" class="dialog-footer">
            <el-button @click="shouSetRightDiologVisible = false">取 消</el-button>
            <el-button type="primary" @click="allotRights">确 定</el-button>
        </span>
        </el-dialog>
 </div>
</template>

<script>
export default {
    data(){
        return {
            //所有角色列表数据
            roleList:[],
            // 控制权限分配对话框
            shouSetRightDiologVisible:false,
            // 所有权限数据
            rightlist:[],
            // 树形控件的绑定对象
            treeProps:{
                label:'authName',
                children:'children'
            },
            // 默认选中的节点
            defKeys:[ ],
            // 当前即将分配角色的id
            roleId:''
        }
    },
    created() {
        this.getRolesList()
    },
    methods:{
        async getRolesList(){
           const {data:res}=await this.$http.get('roles')
           if (res.meta.status!==200){
              return this.$message.error('获取列表失败')
          }
          this.roleList=res.data
          console.log(this.roleList);
          
          },
    async removeRightById(role,rightId){
          //弹框提示是否删除
         const confirmResult= await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confirmResult!=='confirm'){
            return this.$message.info('取消了删除')
        }
         const {data:res}= await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
         if(res.meta.status!==200){
         return this.$$message.error('删除失败')
         }
     //   this.getRolesList()
    role.children=res.data
    },
    //通过递归函数获取角色下所有三级权限的角色id并保存到dayKey数组中
    async shouSetRightDiolog (role){
        this.roleId=role.id
        // 获取所有权限列表
        const {data:res}=await this.$http.get('rights/tree')
        if(res.meta.status!==200){
            return this.$message.err('获取权限列表失败')
        }
        // 获取权限列表
        this.rightlist=res.data
        console.log(this.rightlist);
        // 递归回去所有的三级节点
        this.getLeafKey(role,this.defKeys )
        
        this.shouSetRightDiologVisible=true

     },
    getLeafKey(node,arr){
        //如果当前node节点不包含children属性则是三级节点
        if(!node.children){
            return arr.push(node.id)
        }
        node.children.forEach(item=>
        this.getLeafKey(item,arr))
    },
    // 监听分配分配权限对话框的关闭时间
    setRightDiologClosed(){
        this.defKeys=[]
    },
        // 点击为角色分配id
    async allotRights(){
        const keys=[
            ...this.$refs.treeRef.getCheckedKeys(),
            ...this.$refs.treeRef.getHalfCheckedKeys()
        ]
       const idStr =keys.join(',')
       const {data:res} =  await this.$http.post(`roles/${this.roleId}/rights`,{
           rids:idStr
       })
       if (res.meta.status!==200){
           return this.$message.error('分配列表失败')
       }
       this.$message.success('分配列表成功')
       this.getRolesList()
       this.shouSetRightDiologVisible = false
        
    }
     

    }
      
    
}
</script>

<style lang="less" scoped>
.el-tag {
    margin: 7px;
}
.bdtop {
   border-top: 1px solid #eee;
}
.bdbottom {
    border-bottom: 1px solid #eee;
}
.vcenter {
    display: flex;
    align-items: center;
}
</style>